Determine the number of permutations of {1,2,3,...,n-1,n} where n is any positive integer and no even...

Determine the number of permutations of {1,2,3,...,n-1,n} where n is any positive integer and no even integer is in its natural position.

Expert Solution

Colby Messinger answered 2 years ago

Consider an n×n square board, where n is a fixed even positive integer. The board is...

Consider an n×n square board, where n is a fixed even positive integer. The board is divided into n 2 unit squares. We say that two different squares on the board are adjacent if they have a common side. N unit squares on the board are marked in such a way that every unmarked square on the board is adjacent to at least one marked square. Determine the smallest possible value of N.

please provide good answer. 1). Let S = { 1,2,3, …., n} for some positive integer...

please provide good answer. 1). Let S = { 1,2,3, …., n} for some positive integer n. Define the operations + and . on S as x + y = max{ x, y }, and x.y = min{ x, y }. Is it possible to make S into a Boolean algebra with these two operations? Explain your reasoning. [ Note: max{ x, y } returns the maximum of the values x and y, and min{ x, y } returns the...

Prove that τ(n) < 2 n for any positive integer n. This is a question in...

Prove that τ(n) < 2 n for any positive integer n. This is a question in Number theory

Show that for any square-free integer n > 1, √ n is an irrational number

Prove that if n is an integer and n^2 is even the n is even.

Use induction to prove that for any positive integer n, 8^n - 3^n is a multiple...

Use induction to prove that for any positive integer n, 8^n - 3^n is a multiple of 5.

Partitions Show that the number of partitions of an integer n into summands of even size...

Partitions Show that the number of partitions of an integer n into summands of even size is equal to the number of partitions into summands such that each summand occurs an even number of times.

A positive integer N is a power if it is of the form q^k, where q,...

A positive integer N is a power if it is of the form q^k, where q, k are positive integers and k > 1. Give an efficient algorithm that takes as input a number N and determines whether it is a square, that is, whether it can be written as q^2 for some positive integer q. What is the running time of your algorithm? write the pseudocode for the algorithm.

1b) Suppose z is any positive even integer. Write a formula in terms of z that...

1b) Suppose z is any positive even integer. Write a formula in terms of z that gives the total number of palindromes of length z using characters from a set that contains 40 different symbols. A palindrome is a string of characters that are the same from left to right and right to left. 1c) Suppose z is any positive odd integer. Write a formula in terms of z that gives the total number of palindromes of length z using...

About finding the number of permutations Let there be n pairs of 2*n students : (1,...

About finding the number of permutations Let there be n pairs of 2*n students : (1, 2) , (3, 4), (5, 6) ... (2n-1 , 2n). We want to find the number of arrangements of students which the pair are not adjacent. In other words, for (2*i) th student, the (2*i -1) th student should not be in his front or back. For example, think of case of n=2. In this case, (1, 4, 3, 2) is not appropriate for...

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